Radiata - The Jellyfish
Phylum Cnidaria
- Class Hydrozoa: Hydroids polyps and medusa stages in life cycle
- Class Scyphozoa: Jellyfish polyps may be present or suppressed; planulae develop into new medusae
- Class Cubozoa: Box Jellyfishpolyps mostly unknown; some very toxic species
- Class Anthozoa: Sea Anemones & Coralsno medusa in life cycle; often with symbiotic algae (zooxanthellae) in tissue
Phylum Ctenophora: Comb Jellies: comblike platesof cilia used for locomotion; bioluminescent